3io said
if you look at www.armani.com, www.diesel.com and www.burberry.com for example you will see traditional design

All of these sites are well known in the fashion world and their main focus is design. Responsive sites are more of a convenience factor, which does decrease the design aspect of things. Also, those sites are very image based (background images, large files, etc), which would simply just take up space on a mobile device…

I do think responsive sites are very important, but they are not for everyone. Anything image/design heavy should probably do at least 2 different sites.